The level of corn production depends on the field management at the time of the earring, and depends on the fertilizer and water conditions. In order to obtain a good corn harvest, field management at the earliest stage must be done.
Maize heading date refers to the jointing-seedling period. It is corn stem and leaf growth is relatively strong, male and female begin to differentiate, vegetative growth and reproductive growth go hand in hand, the largest amount of water consumption, the need for the most fertilizer, pest frequent occurrence period, determine the number of effective panicles and grain The number of plant growth is good or bad, and has an important impact on corn yield.
I. Appropriate application of granule fertilizer: The ear period is the period in which corn needs the most fertilizer and needs the greatest fertility. The absorption of nitrogen, phosphorus, and potassium accounts for 50-55% and 52-60% of the total amount of corn's life. 75-85%. In the beginning of the withdrawal of the female ear silk, mu with 0.5-1 kg of urea and water 50 kg and 2-3% of superphosphate or 0.2% potassium dihydrogen phosphate solution 75 kg spraying.
Second, pouring slurry: the ear of corn water consumption is the largest, accounting for 30-35% of the total consumption of water, tasseling period, the maximum water intensity, is the critical period of corn water demand, drought, water shortage will cause varying degrees of Reduced production, or even no harvest, severely affected production. Where there are irrigation conditions, corn needs more water from heading to milk-mature stage. Irrigation at this time not only can increase the seed setting rate, but also can promote the operation of nutrients to ensure that the grain is full and increase the yield.
Third, to strengthen the cultivator, soil cultivation: cultivator can improve soil permeability and fertilizer and water supply, promote root development, but also remove weeds. Soil cultivation is conducive to aerial root development and effectively prevents lodging. In rainy years, cultivators can scatter.
Fourth, pest control: 1, control corn spider mites: with 20% of dicofol EC 1000 times, or 50% chlorate EC 2000 times, or 20% chloramphenicol 2000-3000 times, or 50% quinoline Sulphur EC 2000-3000 times spray control. 2, control of corn spot size: with 70% thiophanate-methyl 1000 times, or 75% chlorothalonil powder 1000 times, or 45% Fuji 1000th 1000 times or 75% mancozeb 1000 times spray Prevention.
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